expansion. [ ฤญk-spฤnโฒshษn ] An increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.
Table of Contents
What is expansion and contraction in physics?
Thermal Expansion and Contraction. THERMAL EXPANSION AND CONTRACTION. Materials expand or contract when subjected to changes in temperature. Most materials expand when they are heated, and contract when they are cooled. When free to deform, concrete will expand or contract due to fluctuations in temperature.
What is heat expansion in physics?
What is Thermal Expansion. Thermal expansion is the phenomenon observed in solids, liquids, and gases. In this process, an object or body expands on the application of heat (temperature). Thermal expansion defines the tendency of an object to change its dimension either in length, density, area, or volume due to heat.
What does expansion mean in thermodynamics?
Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions.
What is expansion Short answer?
Expansion is the process of becoming greater in size, number, or amount.
What is the best definition for expansion?
Definitions of expansion. the act of increasing (something) in size or volume or quantity or scope. synonyms: enlargement.
What is expansion with example?
Expansion is defined as the act of getting bigger or something added onto something else. An example of an expansion is an extra three rooms built onto a house. noun. 2.
What is expansion and contraction with example?
Examples of expansion and contraction: If we hold a very hot glass tumbler under cold water. it cracks. This is because the outer surface of the glass comes in direct contact with cold water and contracts more as compared to the inner surface. Water expands on heating try this with the help of an adult.
What’s the difference of contraction and expansion?
Answer: The increase in the size of an object on heating is called expansion whereas, the decrease in size of an object on cooling is called contraction.
What are the types of expansion in physics?
There are three types of thermal expansion depending on the dimension that undergo change and that are linear expansion, areal expansion and volumetric volume.
How does expansion occur?
Thermal expansion is caused by heating solids, liquids or gases, which makes the particles move faster or vibrate more (for solids). This means that the particles take up more space and so the substance expands.
Why is heat expansion?
The expansion (or contraction) of any material is due to the kinetic energy of its atoms. When a material is heated, the increase in energy causes the atoms and molecules to move more and to take up more spaceโ that is, to expand. This is true of even a solid such as a metal.
What is expansion in heat energy?
According to the molecular theory of matter, objects absorbing thermal energy have molecules with increasing kinetic energy. This causes the object to expand. All three states of matter undergo thermal expansion.
What is free expansion in physics?
The Joule expansion (also called free expansion) is an irreversible process in thermodynamics in which a volume of gas is kept in one side of a thermally isolated container (via a small partition), with the other side of the container being evacuated.
What is expansion of a gas?
The expansion of a gas occurs whenever it is heated. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.
How do you write an expansion?
- 5 Tips to Expand an Idea. Here are just a few ways to expand your idea
- State and deny the contrarian view to your idea.
- Provide examples that illustrate your idea.
- Quote someone else.
- Use metaphor, imagery, or other literary devices.
- Apply the idea.
What is a different word for expansion?
In this page you can discover 33 synonyms, antonyms, idiomatic expressions, and related words for expansion, like: spread, increase, enlargement, augmentation, extension, growth, restructuring, widening, elaboration, diversification and rationalisation.
What is expansion and extension?
Although extend and expand can be used interchangeably in some contexts, extend applies to things that are being stretched out, while expand applies to things that are spread out. One implies length; the other area. If you extend your arm, for example, you stretch it out, making it longer.
What are the three types of expansion?
The three types of thermal expansions are Linear expansion , Superficial expansion and Cubical expansion.
Is stretch and expansion the same?
If you extend your arm, for example, you stretch it out, making it longer. If your waist expands, it’s getting larger. As a business expands, or gets larger, it may extend its opening hours.
What is the difference between expansion and dilation?
A dilation that creates a larger image is called an enlargement (or expansion). A dilation that creates a smaller image is called a reduction (or contraction). A dilation is NOT a rigid transformation.
What’s the difference between increase and expansion?
When more quantity is supplied at the same price, it is called an increase in supply. Expansion of supply takes place only due to a rise in the price of a commodity. The other factors remain constant.
What is the law of expansion?
by Meaning Ring on 2014/07/27. The only way to increase your capacity intentionally is to change the way you approach personal growth. Learning more information isn’t enough. You must change how you think and you must change your actions.
What happens in expansion?
Expansion is the phase of the business cycle where real gross domestic product (GDP) grows for two or more consecutive quarters, moving from a trough to a peak. Expansion is typically accompanied by a rise in employment, consumer confidence, and equity markets and is also referred to as an economic recovery.
What factors cause expansion?
As the temperature of the matter increases, the average kinetic energy of the atoms increases and they start to vibrate faster. Due to this the matter expands. So, temperature is the factor which cause expansion.